<article>
    <div class="alert alert-info">
        <p>The sitemap in XML format can be downloaded <a href="<?php echo $this->url('sitemap/xml')?>">here</a></p>
    </div>

    <?php
    // In a view script or layout:

    // format output
    $this->navigation()
        ->sitemap()
        ->setFormatOutput(true); // default is false

    // other possible methods:
    // ->setUseXmlDeclaration(false); // default is true
    // ->setServerUrl('http://my.otherhost.com');
    // default is to detect automatically

    // print sitemap
    echo $this->navigation()->sitemap();

    ?>
</article>